/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.flink.runtime.executiongraph;

/**
 * An exception that indicates a mismatch between the expected global modification version of the
 * execution graph, and the actual modification version.
 */
public class GlobalModVersionMismatch extends Exception {

    private static final long serialVersionUID = 6643688395797045098L;

    private final long expectedModVersion;

    private final long actualModVersion;

    public GlobalModVersionMismatch(long expectedModVersion, long actualModVersion) {
        super("expected=" + expectedModVersion + ", actual=" + actualModVersion);
        this.expectedModVersion = expectedModVersion;
        this.actualModVersion = actualModVersion;
    }

    public long expectedModVersion() {
        return expectedModVersion;
    }

    public long actualModVersion() {
        return actualModVersion;
    }
}
